Spindle-bearing



Patented Aug. 9, |898.

ci.` o. D HAPER. SPINDLE BEARING.

4 f 1 l f 1 a f (Application led May 22, y1897.)

(N0 Mdel.)

rTE e STATES ATENT EEncE, f i

GEORGE o. DEAPER, or HOPEDAL'E,MAssAcHUsETTs, AssIGNoR To 'r1-IE DEAPER COMPANY, OE SAME PLACE AND PORTLAND, MAINE. y

SPINDLE-BEARING. l l

SPECIFICATION forming part of Letters Patent N o. 608,976, dated August 9, 1898. Application tiled May Z2, 1897. `Serial No. 637,706. (No model.)

To all whom t may concern: the band always on the saine section of the Be it known that I, GEORGE O. DRAPER, of bolster; but when worn the bolster may be Hopedale, county of Worcester, State of Masgiven a quarter-turn and again locked inw/pf sachusetts, have invented an Improvement in4 place, a suitable groove being made in the ,TW

5 Spindle-Bearings, of which the following debolster to cooperate with the locking device 55 d scription, in connection with the accompanyused. ing drawings, is a specification, like letters Figure l of the drawings represents in secon the drawings representing like parts. tion and elevation a spindle-bearing embody- Prior to this invention it has been customf ing myinvention. Fig. 2 shows the step and Io ary to employ a step having at its upper end the lower'end of the bolster with which it is 6o a sorew-thread connected loosely with,` a connected. screw-thread cut in the lower .end of a bol- *The supporting-case A and the spindle B, ster, and the lower end of the bolster and the havinga sleeve-whirl B', are and maybe all as step or a collar at its lower end have been conusual. The upper end of the supporting-case nected with a spring, the step and part ofthe is herein shown as provided with a groove a, 65 bolster being notched to receive' in said in which enters a pin or projection b, carried notches loosely the ends of a spring, said by the upper end of the bolster c, said bolster spring preventing the rotation of the step in being notched at itslower end, as at c', and the supporting-case. This class of step has provided with an extension c2, the bolster be- 2o been used with a spindle having a tapered ing surrounded between its ends, as herein 7o pintle fitting the tapered interior of the bolshown, by fibrous or other suitable or usual ster, and at times the position of the step and packing, as c3. The chamber of the bolsterbolster are relatively changed by or through case receives a step d, the upper end of which, said screw-thread to enable the iit between the provided with a screw-thread, is screwed into pintle ofthe spindle and theinteriorofthe bolthe threaded lower end of the bolster, said 75 ster to be properly insured. In practice the threads being made in the extension c2 to form step has been restrained from rotation byapin a support for the lower end of the spindle. or projection in the supporting-case. In ap- The step is notched, as at d', and one end of plying this connected bolster and step to the a spring e enters said notch, the other end of 3o support-ing-case difficulty has been experi` the `said spring entering the notch c' of the 8o v enced in quickly causing the notched part of bolster.

the step to nd and properly embrace the pin With the bolster and step herein described of the su pporting-case, which is to restrain its they may be put together and pushed directly rotation, and so also in case it is desired to into the bore of the supporting-case, the pin put a reverse twist into the yarn it is necesor projection b ofthe bolster entering the 85 sary to withdraw the bolster and step and groove a at the top of the bolster-case, the change the spring and substitut-e for it one stepseating itself in the bottom of the open- V woundinareverse manner. Toobviate these ing of` the bolster. Thereafter the bolster #l f diiculties, I have combined with the upper `cannot rotate with the spindle, and when the r 4o end of the bolster and the upper end of the` bolster cannot rotate the step cannot rotate, 9o 1 bolster-case a locking or restraining device `and the spring works just as well whether the which prevents the rotation of the bolster, twist put into the yarn by the spindle be a leaving the steplconnected with the bolster right Or left twist, and when applying the only by the spring, the spring itself being the step'it readily finds its positioningthefbore of i only means having any tendency whatever to the bolster-case, and it doesnot have to be 95 restrain the rotation of the step with the spinturned-about therein to iind theusual pin. E die. As herein exhibited, the pin is carried The springin this present invention merely f by the bolster, and the slot is made in the bol serves the purpose of a spring or yielding lock l i ster-case. This construction also brings the between the bolsterandstep. 5o wear of the spindle caused by the strain of Thebolsterand step1naybewithdrawn,and Ioo while the spring is compressed with the iingers the bolster may be turned on or with re lation to the screw-threaded end of the step.

The threaded step and bolster are common to United States Patent No. 490,25, dated January 17, 1893.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

Abolster-ease, a bolster1 located therein and tapered internally, said bolster being provided at its lower end with a screw-thread and a notch, means to restrain the free rotation of said bolster in said bolster-oase yet permitting said bolster to be withdrawn and turned partially around to compensate when desired for wear of the bolster, combined with a step having a screw-thread engaging loosely the screw-thread at the lower end of the bolster, and a spring interposed between a collar at the lower end of said step and the lower end of said bolster, said spring engaging at its opposite ends the said collar and said bol* ster, such construction'enabling the same bolster and step to be used with a spindle turning either right or left, substantially as described.

In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

i GEORGE O. DRAPER. Witnesses:

E. D. BANCROFT, FRED W. ABELE. 

